Ophthalmic mounting



W. S. SEARLES. oPHTHALMac MouNlNG. --PPLICATION FILED NOV. 4, 1.9!9.

"1,345,029, Patented June 29,1920.

@UNITED STATESPVATENT LOFFICE ,WAYNE s. SEAR'IIRSOI rROvIDENoR, RHODE ISLAND, 'AssIGNOR To UNIVERSAL RHODE ISLAND. n

OPTICAL CORRORATION, or rRofvIDENOR, RHODRISLAND, yA CORPORATION or ORII'THALIIIO MOUNTING. i l

Specification of Letters Patent.- Patented June 29, :1920,

Application led November 4, 1919. Serial; No. 335,593.

To all whom it may concern:

Be it known that I, WAYNE S. SEARLES, a citizen of the United States, and resident of the city of Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improyements in Ophthalmic Mountings, of which the following is a specification. n

This invention relates to an improvement in ophthalmic mountings more `particularly to a non-metallic rim for a lens frame 'In such a mounting; and the object of this 1nvention is to provide such aV non-metallic rim of a continuous annular band grooved internally to fit over the lens frame, one of the side walls of the rim being notched to receive the end pieces of the frame, and that portion of the rim. adjacent said notch being increased in cross sectional area over that of the corresponding portions of the rest of the rim to render the notched portion of the rim as strong if not stronger than that of the rest of the rim.

With these and other objects in view, the invention consists of certain novell features of construction, as will be more f ully described, and particularly pointed out in the appended claims.

ln the accompanying drawings:

Figure 1 is a rear view of the lens frame showing the outer rim as being wider at the lens frame end pieces than the corresponding portions of the rest of the rim.

Fig. 2 shows a portion of the nonmetallic rim removed from the frame, and illustrating the widened section of the wall opposite the notched portion.

Fig. 3 is an edge view of the nonmetallic rim showing the same as notched to receive the end pieces of the frame.

Fig. 4 is an enlarged cross section on line .L--lz of Fig. 2, illustrating the general shape of the non-metallic rim and showing the increased width of the rim beyond.

Fig. 5 is a section on line 5--5 of Fig. 2 through the notched portion and also through the opposite widened wall of the rim.

Fig. 6 is a sectional edge view Online 6 6 of lfig. l, showing the lens mounted in its frame and the non-metallic rim positioned to cover the frame and increased in cross sectional area over thatV of the corresponding portion of the rest of the rim.

Referring to the drawings, 10 designates one of a pair of the usual metallic lens frames for eyeglass or spectacle mountings which is connected together by the usual nose piece 11, and the outer portion of each frame is usually split or separated at 12 and the ends are provided with so-called end piecesv 13 which extend laterally outward from the frame for the purpose of providing means for binding the frame about the lens also to provide a convenientmeans to which the temples (not shown) may be attached.

The primary object of this invention is toy provide the outer rim 15 of shell, Xylonite, f

celluloid, or other suitable non-metallic material and to form this rim into a continuous annular band internally grooved" to receive and snap yover the lens frame.

It is found in practice to be necessary in some instances to notch the rim as at 16 sov as to receive or fit around the end pieces 13. When such a notch is cut or formed in the outer side 'wall` of the rim it naturally weakens the stock at this point which renders the rim liable to be broken.

To obviate this serious diiculty,I have formed the inner sidewall 17 of the rim, at a point opposite the outer notched wall,

wider than the corresponding portion of the i rest of the rim thereby rendering the rim at the notched portion substantially the samestrength as at the rest of the rim.

Then again in some cases I form the edge 1. A non-metallic rim for a lens frame formed of a continuous annular band internally grooved to receive the lens frame,

one side wallof the grooved portion being f notched to receive the end piece on the frame and that portion of the rim adjacent said notch being increased in cross-sectional area over that of the corresponding portion `2 v I Y 1,845,029

n notched to receive t of the rest of the rinito render the in )tchedr` fratrie,V and the side Wall of the riin Yoppo-` portion as VstrongA as thatof the balance of sitethat of said notoh being formed Wider for 1t)V therim. Y a short distance than the corresponding por- Y 2. Anon-metallic rim for a lens frame tion of the rest of theirimto gtiieirthe rim formed of a continuous annular *band inat' thenotched portion Vandrendeiit as ternally grooved to receive the lens frame, strong as that of the Vbalance thereof. Y Y one side Wall of the irooved portion being ln testimony whereof I aix my signature. 15

e end piece on thev Y fWAYNE S. SEARLES- 

